Standardized universities can only be admitted after the college entrance examination, because this is determined by the student status system+college entrance examination.
South University of Science and Technology, which is completely enrolled by its own school, has a diploma issued by its own school, so you don't have to take the university entrance examination, but you need to go through an interview with your own school.
Some informal universities, such as self-taught ones, may even study on university campuses, but they are not the same concept as the universities we understand.
Even you can audit some university courses, but you don't have the identity of this school and don't belong to what we think of as going to college.
Some colleges and universities can enroll students independently or register for admission, and their scores may be high or low, but taking the college entrance examination is a necessary condition.